Key result
Mesenchymal condensations interact with distal myocardium to drive human truncal septation.
Why the study?
The developmental anatomy and structural features of human cardiac outflow during truncal septation were not fully characterized in early embryonic stages.
Population
16 normal human embryos gestational days 29-39, crown-rump length 6-20 mm, stages 14-19
Design
Observational study using external photographs, histological sections, and computer graphic reconstructions
Authors
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May inform models of congenital outflow defects; leaves open validation in abnormal embryos before research translation.
Observational (n=16)
Thompson et al. (1985) conducted an observational in Normal embryonic development (n=16). Observation of 16 normal human embryos showed that mesenchymal condensations interact with the distal myocardial rim during truncal septation to form a complex dividing the two arterial streams.
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